How did the poker magic change from red to black? ? If you want to decrypt it, you must say it! ! !

1. First prepare a prop card, as shown in the figure below.

2. Then, take out a card. This is a T-card, with one side wide and one side narrow, as shown below.

3. Then, wash the red card and the black card together, as shown below.

4. Take a closer look. After this deck is closed, you can see that some cards are wide and some things are narrow, as shown below.

5. Hold the card with both hands, and then put your thumb on it, as shown in the figure below.

6. Gently pull out the card, as shown in the figure below.

7. That's it. See the effect, as shown in the figure below.